CVE-2020-0837
Last modified
CVE-2020-0837 is a medium-severity vulnerability rated 5/10 on the CVSS scale. <p>An elevation of privilege vulnerability exists when Active Directory Federation Services (ADFS) improperly handles multi-factor authentication requests. An attacker who successfully exploited this vulnerability could bypass some, but not all, of the authentication factors.</p> <p>To exploit this vulnerability, an attacker could send a specially crafted authentication request.</p> <p>This security update corrects how ADFS handles multi-factor authentication requests.</p>. EPSS estimates a 1.44% chance of exploitation in the next 30 days.
Description
<p>An elevation of privilege vulnerability exists when Active Directory Federation Services (ADFS) improperly handles multi-factor authentication requests. An attacker who successfully exploited this vulnerability could bypass some, but not all, of the authentication factors.</p> <p>To exploit this vulnerability, an attacker could send a specially crafted authentication request.</p> <p>This security update corrects how ADFS handles multi-factor authentication requests.</p>
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 | 1607 |
| Microsoft | Windows 10 | 1809 |
| Microsoft | Windows 10 | 1903 |
| Microsoft | Windows 10 | 1909 |
| Microsoft | Windows 10 | 2004 |
| Microsoft | Windows Server 2016 | All versions |
| Microsoft | Windows Server 2016 | 1903 |
| Microsoft | Windows Server 2016 | 1909 |
| Microsoft | Windows Server 2016 | 2004 |
| Microsoft | Windows Server 2019 | All versions |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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